/*
 *  Copyright 2008 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.mybatis.generator.codegen.ibatis2.dao.elements;

import java.util.Set;
import java.util.TreeSet;

import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.java.Interface;
import org.mybatis.generator.api.dom.java.JavaVisibility;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.api.dom.java.Parameter;
import org.mybatis.generator.api.dom.java.TopLevelClass;

/**
 * 
 * @author Jeff Butler
 * 
 */
public class SelectByExampleWithBLOBsMethodGenerator extends
		AbstractDAOElementGenerator {

	private boolean generateForJava5;

	public SelectByExampleWithBLOBsMethodGenerator(boolean generateForJava5) {
		super();
		this.generateForJava5 = generateForJava5;
	}

	@Override
	public void addImplementationElements(TopLevelClass topLevelClass) {
		Set<FullyQualifiedJavaType> importedTypes = new TreeSet<FullyQualifiedJavaType>();
		Method method = getMethodShell(importedTypes);

		if (generateForJava5) {
			method.addSuppressTypeWarningsAnnotation();
		}

		StringBuilder sb = new StringBuilder();
		sb.append(method.getReturnType().getShortName());
		sb.append(" list = "); //$NON-NLS-1$
		sb.append(daoTemplate.getQueryForListMethod(
				introspectedTable.getIbatis2SqlMapNamespace(),
				introspectedTable.getSelectByExampleWithBLOBsStatementId(),
				"example")); //$NON-NLS-1$
		method.addBodyLine(sb.toString());
		method.addBodyLine("return list;"); //$NON-NLS-1$

		if (context.getPlugins().clientSelectByExampleWithBLOBsMethodGenerated(
				method, topLevelClass, introspectedTable)) {
			topLevelClass.addImportedTypes(importedTypes);
			topLevelClass.addMethod(method);
		}
	}

	@Override
	public void addInterfaceElements(Interface interfaze) {
		if (getExampleMethodVisibility() == JavaVisibility.PUBLIC) {
			Set<FullyQualifiedJavaType> importedTypes = new TreeSet<FullyQualifiedJavaType>();
			Method method = getMethodShell(importedTypes);

			if (context.getPlugins()
					.clientSelectByExampleWithBLOBsMethodGenerated(method,
							interfaze, introspectedTable)) {
				interfaze.addImportedTypes(importedTypes);
				interfaze.addMethod(method);
			}
		}
	}

	private Method getMethodShell(Set<FullyQualifiedJavaType> importedTypes) {
		FullyQualifiedJavaType type = new FullyQualifiedJavaType(
				introspectedTable.getExampleType());
		importedTypes.add(type);
		importedTypes.add(FullyQualifiedJavaType.getNewListInstance());

		Method method = new Method();
		method.setVisibility(getExampleMethodVisibility());

		FullyQualifiedJavaType returnType = FullyQualifiedJavaType
				.getNewListInstance();
		if (generateForJava5) {
			FullyQualifiedJavaType fqjt;
			if (introspectedTable.getRules().generateRecordWithBLOBsClass()) {
				fqjt = new FullyQualifiedJavaType(
						introspectedTable.getRecordWithBLOBsType());
			} else {
				// the blob fields must be rolled up into the base class
				fqjt = new FullyQualifiedJavaType(
						introspectedTable.getBaseRecordType());
			}

			importedTypes.add(fqjt);
			returnType.addTypeArgument(fqjt);
		}
		method.setReturnType(returnType);

		method.setName(getDAOMethodNameCalculator()
				.getSelectByExampleWithBLOBsMethodName(introspectedTable));
		method.addParameter(new Parameter(type, "example")); //$NON-NLS-1$

		for (FullyQualifiedJavaType fqjt : daoTemplate.getCheckedExceptions()) {
			method.addException(fqjt);
			importedTypes.add(fqjt);
		}

		context.getCommentGenerator().addGeneralMethodComment(method,
				introspectedTable);

		return method;
	}
}
